Vocab Pt. 1
This is a metric unit of force.
What is a newton?
This is any push or pull.
What is force?
To find a runner's speed you need to know the distance he or she ran and the--
What is the time it took?
Motion is started and stopped by--
What is forces?
Train A traveled 180 kilometers in 2 hours with no stops. Train B traveled 120 in 1 hour with no stops. Which train moved faster? How do you know?
Hint: How did you get this answer?
Train B moved faster. Train A moved 90 kilometers an hour (discovered by dividing 180 by 2 to compare the distance both trains traveled in 1 hour) and Train B moved 120 kilometers in 1 hour.
This is any change in position
What is motion?
This is a measure of the force of gravity on an object.
What is weight?
Riding down a hill on your bicycle, slowing down, and turning are all examples of--
What is acceleration?
To go faster on a skateboard, you need to push it with more force or push with the same force for--
Describe the forces you would use in catching, dribbling, and shooting a basketball. How could another player cause forces on the basketball to be balanced?
Hint: When does nothing exert force on the basketball?
Dribbling is a series of pushes.
Shooting is a push.
Gravity pulls the ball through the net.
Friction between shots and the floor enables motion.
The forces on the basketball are balanced whenever someone is holding the ball still.
This is a change in the speed or direction of an object's motion.
What is acceleration?
This is a force that pulls all objects toward each other.
What is gravity?
When you push a grocery cart, you are exerting--
What is force?
To measure force, you can use a
What is spring scale?
If friction did not exist, could you stop a bicycle that you were riding? Why or why not?
Hint: Newton's first law of motion.
You couldn't stop easily. Without friction, the brakes wouldn't work and the tires would just keep rolling. You need a rocket pushing you backward to stop.
This is motion that is described based on a frame of reference.
What is relative motion?
This is a force that keeps two objects that are touching from easily sliding past each other.
What is friction?
When you watch a football game from a seat near the top of the stadium, your position and all the things around you are part of your--
What is frame of reference?
You can pick up this by exerting just 1 newton of force.
What is an apple?
To compare the speed of a turtle and the speed of a racoon, you would need--
A stop watch to measure elapsed time and large tape to mark and measure the distance traveled.
Speed is the measure of an object's change in position during a unit of time, so the investigation would have to measure how far each animal travels in a certain amount of time.
These are the things around you that you use to describe motion.
What is a frame of reference?
This is a measure of an object's change of position during a unit of time.
What is speed?
On the moon, a dog would weigh--
What is less than it would on Eart?